Perhalo containing air-drying monomers



United States Patent 3,340,275 PERHALO CONTAINING AIR-DRYING MONOMERS Robert A. Braun, Newark, Del., assignor to E. I. du Pont de Nemours and Company, Wilmington, Del., a corporation of Delaware N0 Drawing. Filed July 25, 1963, Ser. No. 297,677 5 Claims. (Cl. 260-3403) ABSTRACT OF THE DISCLOSURE The disclosure is directed to compounds of the formula Where X is an alkyl, substituted alkyl, substituted phenyl,

alkenyl or substituted alkenyl radical,

Y is a substituted dioxanyl or substituted dioxolanyl radical and K and K are percbloroalkyl, perfluoroalkyl or perchlorofluoroalkyl radicals, and a process for their preparation.

This invention relates to new air-drying fluorine-containing compounds, and to coating compositions made from them.

' It is more particularly directed to fluorine-containing compounds of the formula Patented Sept. 5, 1.967

CH=C H:

and K and K are as described in Formula 1.

Utility The compounds of Formulae 1 and 2 polymerize in.

the presence of siccative metal compounds and oxygen'to form insoluble, tough, durable coatings. The compounds Preparation of compounds The compounds of Formula 1 can be prepared according to the equation In Equations 3 and 4, X, Y, A, Z, K, K m and n are defined as in Formulae l and 2.

Some of the starting materials used in the method of Equation 3 can be made by the reaction of hydroxyalkyl- 2-vinyl-1,3-dioxolanes or dioxanes with polyfunctional acids. This is set forth in greater detail in US. Patent 3,010,923 to Carol K. Ikeda. Others can be made by the reaction of acrolein with polyols, as described in J. Org. Chem., 25, 319 (1960). v

Certain of the starting material used. in the method of Equation 4 can be made by the reaction of dihydropyran-2-methanol with polyfunctional acids. This is described in detail in US. application Ser. No. 99,047, filed Mar. 29, 1961 and now abandoned. Others are commercially available.

The lower perhaloketone reactants are available commercially. The higher ketones can be made by methods described in M. Haupschein and R. A. Braun, J.A.C.S.,

The reactions of Equations 3' and 4 are carried out by mixing exactly eqnimolar' quantities of the reactants and such as hydroquinone is used to prevent polymerization.

during heating.

The compounds are isolated by removing the solvent and traces of unreacted ketone under vacuum. The liquid essentially pure product is left behind. This can be used directly in. the .preparation of coating compositions.

Preparation of coating compositions Coating compositions can be prepared using the compounds of this invention by simply mixing them with the usual amount of a conventional siccative metal drier such as cobalt butyl phthalate. This gives clear, unpigmented 3 finishes. If desired, conventional pigments, in the usual EXAMPLE 1 The following are added to a one-liter stainless steel bomb:

Parts Itaconic acid diester of 4-hydroxymethyl-2-vinyl-1,3-

dioxolane 129 Hydroquinone 0.3 Benzene 300 Hexafluoroacetone '50 The bomb is heated to C. and is held at that temperature for five hours.

It is then cooled to room temperature and the solvent is removed by vacuum stripping at 25 C. and 0.1 mm.

of pressure to give 183 parts of an essentially pure pale yellow fluid having the structure and the maleic acid diester of 4-hydroxymethyl-2-vinyl- 1,3-dioxolane, in the same proportions, to give the cor- A coating composition can be prepared, using this compound as a film-former, by mixing it with 0.05% of cobalt 'butyl phthalate.

This composition is applied to a steel plate with a 3-mil doctor blade to a film thickness of about 1.5 mils. This filin dries to a tack-free state in about 5 hours at C. The drying time can be shortened by baking at a temperature of from 150 C. The actual drying time is naturally determined by the film thickness as well 20 as the temperature.

The ketones and cyclic acetal derivatives listed in the following table can be used in place of hexafluoroacetone and the itaconic acid diester of 4-hydroxymethyl-2-vinyl- 1,3-dioxolane, in the same proportions, to give the cor- 25 responding compounds of the invention, which can be similarly formulated into coating compositions:

Perfiuorohepan-4-one 1,1 ,Z-trichlorotrifiuoroacetone Terephthalic acid diester of 4-hydroxybutyl-2- vinyl-1,6-dioxolane Sebacic acid diester of 4-hydroxymethyl-2-vinyl- 1,3-dioxolane (H) ClFzO-?O F201 (I) responding compounds of the invention which can be similarly formulated into coating compositions:

Perfluorohepan-Z-one l,l,1-trichlorotrifluoroacetone Perfiuoropentan-Z-one 2-vinyl-1,3-dioxolane-4-butyric acid ester of 4- hydroxymethyl-2-vinyl-1,3-dioxolane 1,2'bis- [4- (2-vinyl- 1,3-dioxaneyl) ]ethane The bomb is heated at 150 C. for four hours. It is then cooled and the solvent stripped under vacuum to give 245 parts of a clear yellow essentially pure oil having the structure Itaconic acid diacid ester of 4-hydroxymethyl-2- vinyl-1,3-dioxane 2-vinyl-5-octenedioic acid diacid ester of 4- hydroxybutyl-Z-vinyl-1,3-dioxolane EXAMPLE 2 The following are charged to a stainless steel bomb:

( lHz=CH A coating composition is prepared using this compound as a film-former by adding parts of titanium dioxide, pigment grade, to 100 parts of the compound.

This mixture is then sand-ground to give a smooth dispersion to which are added, with thorough mixing, 0.05 parts of cobalt as cobalt octoate.

This composition is applied by brush as a house paint to give a glossy, adherent and durable coating.

Parts 50 Maleic acid diester of 4-hydroxymethyl- EXAMPLE 4 i' gg ii fff f The following are placed into a stainless steel bomb: Hexaflu'oroacetone 16.6 Parts Hydroquinone 0.2 Itaconic acid diester of dihyropyran- The bomb is heated to 125 C. and maintained at this izgf temperature for 6 hours. Hexafiuoroacetone Y 34 It is then cooled and the solvent removed by stripping to give 63.8 parts of a slightly viscous oil having the structure 0.05 percent of cobalt butylphtha-late is adled to this oil and it is then applied to a steel plate with a 3.3-mil lowing table can be used in place of hexafiuoroacetone p The bomb is heated at C. for 4 hours. The mixture is then cooled and the solvent'removed under vac- CHFCH/ H cum to give 114 parts of a clear, orange viscous liquid having the structure parts of this compound are mixed with 0.05 part of cobalt (as cobalt butyl phthalate) applied to a redwood panel. The film dries to a clear, tack-free coating after twenty-four hours at room temperature, or after about one hour of baking at 50 C.

The reactants in the following list can be used in place of the hexafiuoroacetone and the itaconic acid diester of dihydropyran-Z-methanol, in the same proportions, to

give corresponding compounds of the invention:

Perfluorobutan-Z-one Perfluoropentan-3-one Chloropentafluoroacetone 1,1 ,2,2-tetrachlorodifluoroacetone Fumaric acid'diester of dihydropyran-Z-methanol o-Phthalic acid diester of dihydropyran-Z-methanol Sebacic diester of dihydropyran-Z-methanol Dihydropyran-Z-carboxylic acid ester of 2-dihydrov pyran-2-methanol l CH=CH3 K and K are perchloroalkyl, perfluoroalkyl or perchloro-fluoroalkyl radicals, all containing 1-5 carbon atoms. 2. A compound of the formula OH I Cris-am ii I! CHz=CH-COOH;CH(CH2)rO-C(OH2)s-C(CHzh-n UH=CH2 3. A compound of the cformula ()H h) CFg-(f-OFa (I) CHpCH-O-O-CHa-CH-(GHZ) OO t q t 0=o-0(oH,),-| I

l UH=CH1 L 4. A compound of the formula F 0 GF Cl-C-CFgOl cl) (If oHFoH-o-o oH2-oH- oH2 4-0 b-r -onz-o-oonnkm 0 o CH=CH| 5. A process for the preparation of compounds of the formula CJH K O-Ki n is a whole positive number less than 4;

m is 0-5; X is selected from the group consisting of z)o-1o 7 OC(JCH2- Y is selected from the group consisting of and and K and K are selected from the group consisting of perchloroalkyl, perfluoroalkyl, and perchloro-fiuoroalkyl radicals, all containing 1 through 5 carbon atoms; 5 said process comprising (a) reacting a compound of the formula O O l OH=CH2 where X, Y and m are defined as above, with an equimolar quantity of a perhaloketone of the formula i 2 KCKi where K and K are defined as above, in an inert solvent, at a temperature of about 100175 C. (b) and then isolating the product by removing the inert solvent and traces of unreacted ketone from the reaction mass.

No references cited.

ALEX MAZEL, Primary Examiner.

WALTER A. MODANCE, Examiner.

I. M. FORD, I. TURNIPSEED, Assistant Examiners.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,340,275 September 5, 1967 Robert A. Braun It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 8, lines 63 to 66, the structural formula should appear as shown below instead of as in the patent:

0 ll C-C same column 8 lines 69 to 74, the structural formula should appear as shown below instead of as in the patent:

II t Y @436 Signed and sealed this 3rd day of September 1968.

(SEAL) Attest:

EDWARD M.FLETCHER,JR. EDWARD J. BRENNER Attesting Officer Commissioner of Patents 

1. A COMPOUND OF THE FORMULA 